Lubricating-bearing.



M. P. CHAPLlfN.

LUBRICATING BEARING.

APPLICATION FILED' AuG.8, 191s.

51922595770 l mmm my 8,1917.

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MERLE P. CHAPLIN, OF FAIRFIELD, MAIE, ASSIGNOR TO KEYES FIBRE COMPANY,Ol

' FAIRFIELD, MAINE, A CORPORATIDN 0F MAINE.

LUBRIcaTING-Bnmame.

Specification of Letters llatent.

' 4Patented May 8, 1917.

Application led August 8, 1913. Serial No. 783,695.

To all whom 'it may concern.'

Beit known that l, MERLE P. CHAPLIN, citizen of the United States,.residing at 'Fairfield, county yof Somerset, State of Maine, haveinvented an Improvement in Lubricating-Bearings, of which the followingdescription, in connection with the accompanying drawing, is aspecification, like characters on the drawing representing like parts.

rlhis invention relates to improvements in lubricating bearings,particularly those used for the pivots of arms supporting certain moldmembers in machines for molding articles from pulp, such as thoseillustrated and described in the prior patents to Martin L. Keyes No.759,616, granted May 10, 1904i and No. 788,138 granted April 25, 1905.

ln a machine of this character a traveling mold is employed, said moldbeing made in two parts, one of which is pivoted with respect to theother. The mold parts are hollow or chambered, and connections are madeto said chambers through the arms supporting the mold parts and are toenable the air in said chambers to be exhausted or compressed asrequired in the operation of forming articles from pulp.

At one period in their travel the parts of the mold are pressed togetherby a powerful compressing mechanism in order to compact 'the pulp intothe desired shape, and

. `to reduce the amount of water therein. The

machine is run at a high speed and it is therefore necessary that theparts shall be so constructed as to operate accurately with rapidity.The machine must of necessity be of strong construction to stand thewear and tear of the moving parts, and the powerful compression to whichthe mold parts are subjected. The mold parts, or at `least one of them,in its .travel passes through a vat of liquid pulp, and the pulptogether with other foreign matter splashed more or less over the entiremachine, lparticularly over -the mold carrying,A

arms, and consequently runs down freely upon the pivotaljointconnectingvthe two arms of the mold.

lt is particularly necessary ythat the pvot. arm carrying the movable-mold part shalll swing back and forth on yitspivot w1th greataccuracyin order that the parts ofthe mold may come into exactjuxtaposition, so that the molded article may be formed properly and ofuniform thickness. It is also necessary that this pivotal joint shall bekept well lubricated and that foreign matter shall be wholly preventedfrom entering the bearing. lt is found in practice, where the water fromthe liquid pulp has obtained access to the bearing of this pivotal arm,that the bearing rapidly wears away, in a short time producing alooseness which prevents the proper registry of the molds. Thisnecessitates the stopping of the machine and the replacing of the parts,causing a loss of time and considerable expense in supplying new parts.rlhis and other considerations which will be apparent from anexamination of the machine in question and its workings, render thejoint portion between the pivot and the fixed mold carrying arms a v1talfeature of this machine.

The present invention relates to this feature. It comprises a form ofjoint which has an extended bearing surface, possesses great strengthand secures accurate registry of the mold parts; it provides for athorough and continuous lubrication of the bearing, and the manner inwhich the lubricant is introduced into 'the bearing prevents the entryof water or other foreign matter, or if by chance any Water or foreignmatter obtains access to the bearing, it is promptly forced out. Thejoint made according 'to my invention is of a simple character, iseasily dismantled and 4replaced and has been found in practice to beexceedingly efficient, increasing the life of the machine in which ithas been used, a considerable period.

The invention will more fully appear from the accompanying descriptionand drawings, and will be particularly pointed out in 'the appendedclaims. rl`he drawings represent only the joint portion and such partsas are connected respectively to. the

rotary frame of themachine, and to the arm of the mold.

ln the drawings,`

Figure l is a front elevationshowingthe bearing and the yoke'connectingthe same to the mold army.'v

Fig. 2 is a lplan view shoviiiiijgiin section,

the hollow arm of the relatlvel 'tationary member ofthe mold, and aH'stffe'ning rmg `ius.

Iv- .leading to the .mold chamber j pose of enabling the air in s'aidchamber to connected thereto, 'and 'to which the joint embodying thisinvention is attached.

Fig. 3 is a sectional view through the joint. I

Fig. 4 is an end view the cap removed.

Fig. 5 is a vertical sectional view through the end of the joint showingthe relative relation of the oil-cup,vcap for'the bearing and the ductsfor supplying oil to sald bearing. l

' Fig. 6 is an end view of the part which connects the oil-cup lto thecap, as shown in Fig. 5.

It is unnecessary to describe for the purpose of this invention, thegeneral machine to which it relates, since the same is fully set forthin the above mentioned patents.

The parts of the present invention, in the form illustrated herein,include a U-'shaped member 1, adapted to extend around the arm 2 of thefixed mold member, and te be of the joint, with bolted to the stifeningring 3 ofthe machine by bolts 4, in the same manner as the joint, forthe same purpose, is secured to the ringof themachine illustrated in'said Patent #759,616. The U-shaped member 1 is provided with a boss 5,in which a shaft 6 is ifixedly secured by a set screw 7, the ends v3o `iA tance beyond each end of said boss. Mount' ed upon the ends of theshaft and abuttlng of said shaft projecting a considerable disl #againstthe ends of the boss'are sleeves 8,

l each of which is provided with a thickened portion 9 to which a yoke10 is rigidly se- -cured by machine screws `11. The yoke 10 is providedwith flanges 12 at each end which fit over and embrace the projectingportions of the sleeves above described, and' serves tosecure saidsleeves rigidly from endwise movement uponfthe shaft 6. The yoke 10 isan integral portion of an arm 13, Whichfsupports and carriesthe movablepart of the mold. -The arm 13 is hollow and 11s provided -with the usualair passage 14,

for the purbe exhausted or compressed, as required in the operation lofthe machine. Caps 15 are v.screwed upon thev ends of the sleeves 8 and jare normally forced tightly against the ends .of the shaft 6. Inpractice the sleeves are l 'of such a length as to allow the shaft toproject a short distance beyond the'elnd of the j nut being ta en upwith several thin washers to allow an adjustment in case of wear.

sleeve, the-s ace between the sleeve and the Means are provided for?introducing oil or grease thr ugh the caps and through .or

longitudinally of the shaft, in such a man'- 1ner as tosupply a'lubricant uniformly to .substantially all of the relatively rotatable`Tsui-faces of-'tlie bearings. j f il ybe?supplied''through the esThe'lubricant may Cap 15 by any suitfable forfeed mechanlsm, or by anyother means which will insure a continuous and free supply of lubricant.In Fig. 3 grease guns 1 6 are shown, which are attached to the caps 15and are so arranged as to deliver the lubricant at the axis of theshaft.

1Ville shaft is provided at each end with ducts 17 extending axiallyinward a short distance from the ends of the shafts. Lonboss 5.

Any Water or other foreign material l which might enter between the bossand sleeves will be excluded or promptly forced out and therebyprevented from injuring the surfaces of the bearing. In practice it isfound that when a thin, line of lubricant is found to be present aroundthe shoulder of the boss 5, against which the sleeves 8 abut, theoperator is assured that there can be no water or other foreign matterpresent in theA bearing.

In some classes of machines there is not sufficient room for forced feedlubricators to be secured to the caps axially of the shaft as shown inFig. 3. I have therefore devised a lubricator which may be so secured tothe cap that the reservoir will be maintained atan angle, preferably a'right angle, to the axis of the shaft.A The device is so constructed,however, that the lubricant will be supplied to the axial duct in theshaft.

This modied form of feeding device for the lubricant is shown in Fig. 6.In this form the cap 15 is provided with a projection 19, upon which acylindrical cup 20 is secured by a set crew 21. The cup 20 is providedwith a (nrojection 22 to which a grease gun or other reservoir l23 issecured. The cup 20 provides an annular recess 24, which communicatesthrough an opening 25 with the grease gun or reservoir 23. The cap 15 isprovided with a series of two or more ducts 26, which lead from theannular recess 24 to va central opening in the cap which'in turny'communicates with the axial duct 17 ofthe shaft 6.

It is to be understood that the particular forms and devices forsupplying lubricant above described, are not the only ones which vareadapted to be used in connection with By my invention, as abovedescribed, I

.have provideda joint which possesses great strength and rigiditybecause of the extended bearing surfaces for the rotatable parts,

and of their location upon both sides of the supporting boss.

l have provided a means for uniformly supplying a lubricant to thevrelatively rotating bearing surfaces and have also supplied a meanswhereby said lubricant will be so fed to .the bearing as to exclude anywater or other foreign matter from entering the bearing. Theconstruction thus described has been found to' work with greatsatisfaction, and to secure the desired results under the tryingconditions to which such a device is subjected in a machine of thecharacter in question.

Having fully described my invention what l claim as new and desire tosecure by Letters Patent is l. ln an apparatus of the class described, afixed member provided with a laterally extending shaft having an axialduct and slots, substantially equal in length to thebearing portion ofthe shaft, leading from said duct to the surface of the shaft, a memberrotatably mounted upon said shaft and bearing at one end against saidfixed member,

l a cap secured to the opposite end of said rotatable member andengaging the end of the shaft, means for supplying lubricant throughsaid cap to said duct and means for forcing the lubricant toward thebearing between the fixed and rotatable members whereby the shaftbearing will be protected against entry Aof foreign matter.

2. ln an apparatus of the class described, a fixed member provided witha laterally extending-shaft having an axial duct and slots,substantially equal in length to the bearing portion of the shaft,leading from said' duct to the surface of the shaft, a memy berrotatably mounted upon said shaft and bearing at one end against saidfixed member, a cap inclosing the opposite end of said rotatable memberand tightly engaging the end of said shaft, means for supplying alubricant axially through said cap to the duct in the shaft and meansfor forcing the lubricant toward the bearing between the fixed androtatable members whereby the shaft bearing will be protected againstthe entry of foreign matter.

3. ln an apparatus of the class described, a xed member provided with alaterally extending shaft having an axial duct and slots, substantiallyequal in length `to the bearing portion of the shaft,leading from saidduct to the surface of the shaft, a member rotatably mounted upon saidshaft and bearing at one end against said fixed member, a cap inclosingthe opposite end of said rotatable member and engaging tightly the endof the shaft, means for supplying al lubricant through a plurality ofapertures in said cap to the axial duct in said shaft and means forforcing lubricant simultaneously through said passages to said axial 5.ln an apparatus `of the class described, g

a stationary member, a shaft secured thereto, a member having a yokeprovided with sleeves rotatably mounted at the end of said shaft capssecured to said sleeves and inclos-- ing the ends of said shaft, meansfor introducing a lubricant through said caps for distributing thelubricant uniformly, substantially throughout the relatively .rotatablesurfaces and for causing a flow of said lubricant toward the stationarymember, whereby the shaft bearings are protected against foreign matterentering through the bearings between said fixed and rotatable members.

6. ln an apparatus of the class described, a stationary member, a shaftsecured thereto, sleeves rotatably mounted on the ends of said shaft,projections upon said sleeves, a member having a yoke secured to saidsleeves and having flanges engaging the outer faces of said projections,and securing said sleeves from endwise movement on said bers, wherebythe shaft bearings are protected against foreign matter entering throughthe bearings between said fixed and rotatable members.

7 ln an apparatus of the class described,

a stationary member, a shaft secured thereto, a member having a yokeprovided with sleeves mounted on said shaft, caps mounted on saidsleeves and inclosing the ends of said shaft, ducts leading through saidcaps and axially into said shaft, distributing orifices connecting withsaid ducts and leading therefrom to the surface of said shaft, means forforcing a lubricant into said duct, whereby a uniform flow of thelubricant will be maintained between the relatively rotating bearingsurfaces and toward the stationary member.

8. ln an apparatus of the class described, a stationary member, a shaftsecured thereto, a yoke having sleeves mounted on said shaft, capsmounted on said sleeves and inclosing the ends of said caps, lubricantducts leading through said caps and axially into said shaft, radialslots in said shaft extending substantially throughout the length of thebearing surfaces connecting with said ducts and leading t0 the surfaceof t e v shaft, and means for continuously supplyin said shaft, areservoir for a lubricant affixed to said cap at an angle to the axis ofthe Shaft, ducts leading from said reservoir to the central orilice insaid cap and means for forcing the lubricant into said ducts.

l0. In an apparatus of the class described a shaft having an axial duct,and slots leading therefrom to the surface of said shaft,

a member rotatably mounted on said shaft,`

a cap secured to said rotatable member inclosing the end of said shaftand having a central orilice, a reservoir for a lubricant aiiixed tosaid cap at an angle to the axis of said shaft andhaving a ductconnectingA with the axial duct of said shaft, means variable inthickness interposed between the end of said rotatable member and saidcap whereby said cap may be advanced to compensate for wear and tomaintain tight contact between the .end of the shaft and the cap so thatthe eective force of the lubricant feeding mechanism will be constant.

l1. In an apparatus of the class described, a shaft, a member rotatablymounted thereon, a cap having a central orifice secured to saidrotatable member bearing on the end of said shaft, a reservoir, for alubricant fixed to said cap at an angle to the axis of said shaft, and apluralityl of removable thin washers adapted to fill the space betweenthe end of the rotatable member and said cap whereby adjustment tocompensate for wear may be obtained by removing one or more of saidwashers and advancing said cap.

12. In an apparatus of the class described,

a shaft, a relatively rotatable member mounted thereon, said rotatablemember terminating slightly within the extremity of said shaft, a capadjustably secured to said rotatable member and adapted to bear upon theend of said shaft and a plurality of removable thin washers adapted tofill the space between the end of the rotatable member and said caplwhereby adjustment to compensate for wear may be 'obtained by removingone or more of said washers and advancing said cap. l 4

ln testimony whereof, I have signed my name to this' specication, in thepresence of two subscribing witnesses.

MERLE P. CHAPLIN. Witnesses:

WIIMAM W. Mmmm, ORRIN A. LEARNED.

